From the comments on that article, it sounds like they don't actually disclose what makes the battery work in the patent, which probably renders the patent worthless. Still, I'm hopeful because game changing energy technology might actually positively benefit all of our lives.
They got 3 million investment from Kleiner, Perkins, Caufield & Byers, as per http://abcnews.go.com/Technology/Story?id=3547157&page=2.